﻿using System;
using System.Text;
public static class ByteHelper
{
    public static string ToHex(this byte b)
    {
        return b.ToString("X2");
    }

    public static string ToHex(this byte[] bytes)
    {
        StringBuilder stringBuilder = new StringBuilder();
        foreach (byte b in bytes)
        {
            stringBuilder.Append(b.ToString("X2"));
        }
        return stringBuilder.ToString();
    }

    public static string ToHex(this byte[] bytes, string format)
    {
        StringBuilder stringBuilder = new StringBuilder();
        foreach (byte b in bytes)
        {
            stringBuilder.Append(b.ToString(format));
        }
        return stringBuilder.ToString();
    }

    public static string ToHex(this byte[] bytes, int offset, int count)
    {
        StringBuilder stringBuilder = new StringBuilder();
        for (int i = offset; i < offset + count; ++i)
        {
            stringBuilder.Append(bytes[i].ToString("X2"));
        }
        return stringBuilder.ToString();
    }

    public static string ToStr(this byte[] bytes)
    {
        return Encoding.Default.GetString(bytes);
    }

    public static string ToStr(this byte[] bytes, int index, int count)
    {
        return Encoding.Default.GetString(bytes, index, count);
    }

    public static string Utf8ToStr(this byte[] bytes)
    {
        return Encoding.UTF8.GetString(bytes);
    }

    public static string Utf8ToStr(this byte[] bytes, int index, int count)
    {
        return Encoding.UTF8.GetString(bytes, index, count);
    }

    public static void WriteTo(this byte[] bytes, int offset, uint num)
    {
        byte[] numBytes = BitConverter.GetBytes(num);
        for (int i = 0; i < numBytes.Length; ++i)
        {
            bytes[offset + i] = numBytes[i];
        }
    }
}